Where is the tailgate wiper relay?

I have a 1995 1.2 Clio. Unfortunately the rear wiper doesn't work. We know the motor is ok and the wiring looks ok as far as we can see so suspect the relay to be at fault. We have a Haynes manual and the picture of the relays under the glove box does not correspond with what we have. If somebody could help me to find this relay even if it just what colour it should be then I might stand a chance. Thanks guys.